If you change your old lightbulbs to low energy bulbs you will save money and CO2.
If you don’t switch it on in the first place, you will save a whole lot more.
No matter how low the emissions of your care are, taking your bike will avoid all emissions.
Insulating your house is essential, but a jumper is more efficient.
Many believe that the only way to avoid catastrophic climate change is to change how we behave.